Evaluating Food Intake Outcomes Among Sexual Minority Women: A Systematic Review

Abstract

Purpose: Sexual minority women (SMW) have a higher prevalence of obesity and weight-related health disparities when compared with heterosexual women that may be explained by differences in food intake. This systematic review had two primary aims: (1) synthesize the results for food intake outcomes among SMW, organized primarily according to the dietary risk assessment; and (2) identify possible theoretically informed moderators and mediators of the association between women's sexual identity and differences in food intake. Methods: The literature search was conducted using the PubMed and PsycInfo databases to identify articles published until March 23, 2021. Inclusion criteria were: (1) included a sample of adult SMW, (2) quantitatively assessed a food intake outcome, and (3) published in an English language peer-reviewed journal in the past 10 years. Thirteen articles were eligible and included in the review. Results: Overall, there were inconsistent findings comparing food intake between SMW and heterosexual women. There was some evidence to suggest that identity characteristics beyond sexual orientation (e.g., race and gender presentation) and place of residence (e.g., urban vs. rural settings) were plausible moderators. Only one variable pertaining to SMW's developmental history, mother's diet quality, was identified as a possible mediator. The main critiques of the literature include the predominance of convenience sampling, cross-sectional data, and inconsistencies in the measurement of sexual orientation and diet. Conclusion: This review highlights that further work is needed to consider additional hypotheses to explain disparities in obesity and weight-related health disparities among SMW to inform comprehensive behavioral intervention strategies.

Keywords: diet; mediators; moderators; obesity; sexual minority women.

FIG. 1.

Flow diagram of systematic search procedures, yielding 13 quantitative studies.